The result was flooding in around 80 per cent of the city. In 2006, Royal Haskoning was commissioned to advise the United States Army Corps of Engineers (USACE) on the redesign and rebuilding of the entire Hurricane Storm and Damage Risk Reduction System. Its team provided expertise in hydraulic modelling and design, flood forecasting, GIS-based mapping and risk management. Tasks included establishing baseline data, analysing flood defence performance, and developing and applying innovative modelling and data management tools. Our New Orleans office was staffed by experts from the Netherlands and the UK.Its overall objective was to provide a '100-year level of protection', which would protect flood prone areas against all except the worst 'one per cent' of hurricane events. Coast and Rivers expert Mathijs van Ledden, Royal Haskoning, explains what this means in practice: "The Federal Emergency Management Agency guidance advised that the height of all levees should be one foot above the height of the 'one per cent' wave, the extra foot allowing for uncertainty in the design variables. However this approach did not take account of different levels of uncertainty and degrees of risk. For example, if two locations had the same expected wave height for a given storm, but the forecast for one location was more uncertain for the other, it would make sense to provide additional cover for the risks at the second location."Royal Haskoning constructed a probabilistic design methodology to allow for this in the design of the Hurricane Storm and Damage Risk Reduction System, taking knowledge that was already in existence and applying it to have a practical impact." range3 2011 >> 153:14Beaver Architectural Ironmongery LtdCompact overhead door closer, 10 year guarantee, power adjustable. Adjustable closing speed from 180° with latching action. Tested and approved to EN1154, Certifire approved for fire doorsFinishes: satin nickel (SNP), polished nickel (PNP), electro brass (EB), silver aluminium (SE), colour coated (CC).CodePowersizePoweradjustmentmethodEN 1154 compliant / CE markedBody dims (mm)AdjustablebackcheckManualhold openDelayedclosingNon-projectiontrackFire tested to EN 1634 HWD- 2 hours3.TS62042 - 4Springü4224852üüüSlide arm overhead door closer, 25 year manufacturer's guarantee, power adjustable. Adjustable closing speed from 180° with latching action. Available with different styles of cover. Tested and approved to EN1154, Certifire approved for fire doors.Finishes: polished stainless steel (PSS), satin stainless steel (SSS), satin nickel (SNP), polished nickel (PNP), polished brass (PB), silver aluminium (SE), colour coated (CC).CodePowersizePoweradjustmentmethodEN 1154 compliant / CE markedBody dims (mm)AdjustablebackcheckManualhold openDelayedclosingNon-projectiontrackFire tested to EN 1634 HWD- 2 hours3.TS122052 - 5Springü69290üüü3.TS123043Templateü5521038üüRadius CoverRadius CoverFull Radius Cover6000/1200 Series Closers